Very good point. Unfortunately, too many manufacturers label tubes with larger sizes than they actually are. This is done so that the manufacturer can claim to be selling a tube for "X" size tire at a lower weight. Smaller diameter tubes weigh less of course. So if you can take a tube that's the proper size for a 28mm tire and label is as being a 35mm tube, you get to call it a very lightweight 35mm tube.
On Mon, Oct 13, 2008 at 4:50 PM, landotter <[EMAIL PROTECTED]> wrote: > > Lucky indeed. That's why I do the opposite and "size up" on tubes, as > they run small. The bikes that run 30mm and 32mm tires get "35mm" > tubes which pretty much don't have to stretch any at all to fit the > tire carcass. They aren't bunched up in there either. ;-) Utterly > reliable. > > On Oct 13, 9:24 am, Peter Jon White <[EMAIL PROTECTED]> wrote: > > You've been a bit lucky. It depends on the tube, and it depends on how > > accurately the tube manufacturer labels the tubes for sizing. Where > > you run into trouble is at the valve. The valve acts as a stress riser > > because the rubber at the valve has to stretch more than other parts > > of the tube. > > > > On Oct 13, 7:30 am, bullcitybiker <[EMAIL PROTECTED]> wrote: > > > > > Famous wrench Jim Langely recommends using tubes one-size smaller to > > > make it easier to change a tire. I picked > > > up his tip a couple of years ago and have had good success: no > > > increase in flats, and when I do flat, I can change > > > the tube with no levers. I run 18/23 tubes in my Conti 25s and 28s. > > > > > Branson > > > > >http://www.jimlangley.net/wrench/flattiretwo.htm > > > > > On Oct 12, 6:48 pm, [EMAIL PROTECTED] wrote: > > > > > > > It's just a list of other tubes that Michelin makes. Think of it as > a > > > > > bit of advertising. It's a very bad idea to use inner tubes > designed > > > > > for skinny tires in fat tires. Use those tubes in the tire sizes > > > > > they're rated for; 18mm to 23mm. > > > > > > I agree that it's not a good idea in the long term. But I've found > that > > > > carrying one spare which is skinny often makes it easier to change a > tube > > > > beside the road, especially in difficult conditions (rain, high heat, > > > > etc.). I seem to be less likely to pinch the tube when it's on the > small > > > > side (maybe one size) for the tire. > > > > > > Of course you're supposed to swap out the skinny tube for one of the > right > > > > size when you've stopped for the night. Something I sometimes even > > > > remember to do. > > > -- Peter White --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Bicycle Lifestyle" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/bicyclelifestyle?hl=en -~----------~----~----~----~------~----~------~--~---
